If there are H. pylori bacteria in the
stomach, they will eat those carbohydrates, break them down and produce
gas. This gas enters the blood and then lungs, and it can be measured in expired air. This is the first test, you should have, since H. pylori may be the main cause of your problem. If test is positive, you get antibiotics for a week, and healing follows in most cases. These bacteria cause gastritis (inflammation or ulcers in the stomach) and may cause excessive acid secretion.